Injection Moulding Machine for Saddle Straps
Saddle straps, the clamps that tap a feed water line, are produced on horizontal injection moulding machines in glass-filled PP, glass-filled nylon or plain PP. Pipe size sets mould size and shot weight, with one tool per size. Section at the bolt bosses matters most, since a strap that creeps under bolt load lets the seal weep.
Saddle strap moulding needs full packing of thick bolt bosses and careful handling of glass-filled grades. Pratishna Engineers supplies horizontal injection moulding machines for saddle strap production and can recommend a configuration for your strap range and outlet parts.
Manufacturing Saddle Straps?
Share your pipe size range, strap drawings and material, and Pratishna Engineers will suggest a machine for the tool family.
Machine Requirements for Saddle Strap Moulding
A saddle strap stays clamped on a pipe for years, so strength at the bolt holes and resistance to creep come first. Points to check:
- Packing pressure to fill thick bolt bosses without voids
- Wear-resistant screw and barrel for glass-filled grades
- Hopper dryer for glass-filled nylon
- Gate position that keeps weld lines off bolt holes
- Quick mould change across a family of pipe sizes
- Accurate saddle curve to seat the elastomer gasket
Recommended Machine for Saddle Straps
Straps for smaller pipes are compact parts that suit the E Series (75-180 T), often with both strap halves in one tool. Larger pipe sizes, heavier bolt bosses and glass-filled grades push shot weight and mould size up, so those straps need a C Series (140-320 T) machine, or an H Series (120-350 T) for the biggest sizes.
Not Sure Which Machine You Need?
Send your strap drawings and pipe size range for a machine suggestion.
Why Choose Pratishna Engineers?
- Application-Based Machine Selection
- In-House Engineering & Manufacturing
- Multiple Machine Series
- Production-Focused Solutions
- End-to-End Technical Support
- Industry-Specific Solutions
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Injection Moulding Machine Buyer Resources
Download practical resources to help you select, size and specify the right machine.
Horizontal Injection Moulding Machine Selection Guide
A step-by-step guide covering the key inputs needed to select the right machine: product weight, projected area, number of cavities, plastic material, required clamping force, shot / injection capacity, mould dimensions, production quantity, cycle time and automation requirement.
Download PDFPDF · 265 KB
How to Calculate Clamping Force for an Injection Moulding Machine
A clear methodology that explains how clamping force is calculated, covering projected area, injection pressure, safety factor, number of cavities and material considerations.
Download PDFPDF · 363 KBWater Treatment Components & Machine Guide
A guide to Water Treatment components, covering RO housings, purifier parts, filter housings, push-fit connectors, rotameters, saddles, distributor hubs and valve parts. It explains food-contact grades, pressure strength, sealing faces, and how to match each part to a suitable machine.
Download PDFPDF · 205 KB
FAQs / Buyer Questions
What saddle strap makers usually ask when planning a machine.
Which Injection Moulding Machine Is Used to Make Saddle Straps?
A horizontal machine chosen by pipe size. Straps for small supply pipes sit on the E Series, while bigger pipe sizes and heavier glass-filled straps need the C or H Series.Why Does a Saddle Strap Start Leaking After Some Months?
The strap creeps under constant bolt load, the force on the gasket drops and the seal weeps. Glass-filled grades, generous section at the bolt bosses and void-free packing reduce creep.Is the Gasket Moulded With the Saddle Strap?
Usually not. The gasket is a separate elastomer part, and the needle valve or outlet port is often a separate moulding as well. The strap mould needs an accurate seat for the gasket.
Does Each Pipe Size Need Its Own Saddle Strap Mould?
Yes. Buyers select on pipe size compatibility, so a size range means a family of tools. Quick mould change and a machine that takes the largest tool in the family help run the range on fewer machines.Can Pratishna Recommend a Machine for My Saddle Strap?
Yes. Share the strap drawings for each pipe size, material, part weights, mould dimensions, cavities and monthly volumes, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Pipe and Line Fittings Too?
Yes. Similar machines can mould push-fit fluid connectors, storage tank fittings, vacuum breakers and foot valves, subject to mould size and material.
Technical Disclaimer
Disclaimer: The information provided in this webpage is for general informational and educational purposes only. It is based on technical references and industry information available at the time of preparation and may be subject to change. It does not constitute engineering, technical, commercial or professional advice, nor does it constitute a quotation, specification, warranty or contractual commitment by Pratishna Engineers.
Actual injection moulding machine and process requirements vary according to the component design, material, mould, production volume, machine configuration and operating conditions. The information, examples, calculations and recommendations provided should be independently evaluated and verified for the specific application before making any equipment, process or production decision. Information obtained from third-party sources remains subject to the accuracy and limitations of those sources.
Limitation of Liability: Pratishna Engineers makes no representation or warranty, express or implied, regarding the completeness, accuracy or suitability of the information for any particular application. To the extent permitted by applicable law, Pratishna Engineers shall not be liable for any loss, damage, cost or consequence arising from reliance on or use of the information contained in this webpage. Final machine selection, configuration and application suitability should be confirmed with Pratishna Engineers based on complete and accurate project requirements.
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Planning a New Injection Moulding Project?
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